Hair waving scalp protector



March 16, 1937. H. F. THOMPSON HAIR WAVING SCALP PROTECTOR Filed May 28,1955 FIG.

FIG. 2.-

mil

' INVENTOR ATTQRNEY Patented Mar. 16, 1937 UNITED s'rArss PATENT QFFICE3 Claims.

This invention relates to improvements in hair waving scalp protectors,and more particularly for use in spiral waving.

Among the objects of the invention are to protect the scalp of thewearer from the discomforts of hair pulling and the dangers ofscorching, scalding, electric shock and other incidental risks.

Another object is to reduce the weight and increase the strength of theprotector.

Another object is to eliminate unsanitary materials from the protector..

A further object is to produce a protector that conforms to conventionaltechnique in this art.

Other objects and advantages will appear as the description progresses.

Heretofore metal has entered very largely into the construction ofprotectors in this class. In the present invention metal has beendispensed with wherever possible without sacrifice of strength, becausemetal conducts heat from the heating unit to the scalp. There is alsothe danger of electric shock when metal intervenes between the scalp andan electric heating unit.

The electric hazard and the accumulated heat become a seriousinconvenience when the scalp is entirely covered with the multiplicityof protectors'necessary to accomplish hair waving in accordance withthis art; which should be taken into consideration in analyzing thestructural departures in the present invention.

In this specification and the accompanying drawing the invention isdisclosed in its pref-erred form. It is to be understood however that itis not limited to this form because it may be embodied in other formswithout departing from the spirit of the invention as defined in theclaims following the description.

In the one sheet of drawings:

Fig. 1 is an enlarged plan view from above of a hair clamp and protectorconstructed in accordance with this invention.

Fig. 2 is a side view of the same from the hinge side.

Fig. 3 is a similar view from the latch side. Fig. 4 is a view similarto Fig. 1, with some of the laminations broken away to show the hingeand latch structures.

Fig. 5 is a cross section taken on the line V--V,

Fig. 1. v

Fig. 6 is a side elevation of the clamp in operative position incombination with the hair wav-v protector adaptableto croquignole wavingrods, the rod being omitted.

In detail the construction illustrated in the drawings, referring firstto'Fig. 2, comprises a laminated formation made up of the top and bottomplates I, I and 2, 2, respectively, with the intermediate plates 3, 3and the spacer plates t, i and 5, 5. These plates are preferably die cutfrom compressed fibrous sheets known in the trade as bakelite, which ishard, tough and 10 impervious with a high gloss finish.

These various plates are built up to form opposed jaws hinged togetheron the pintle pin 6. The plates I and 2 are cut away at I and 8 to forma close .arcuate fit with the circumference 15 of the extensions El andII on the plates I and 2, which overlap the lug II on the'opposed jaw ofthe clamp and pivot on the pin 6 to form a hinge.

On the opposite side of the clamp, the plates 4 and 5 are cut away atI2, on opposite. sides of 20 the center plate 3 to expose the'lug I3 onthe plate 3, see Fig. 3. The metal straps I i, I4 lie within the cuts I2in the plates 4 and 5 on opposite sides of the lug I3 and are pivotal onthe pin I5. Similar cuts are made in the plates 25 6 and 5 in theopposed jaw, exposing the latch lug It, on the opposite sides of whichthe straps I4, Ii lie. The latch lever II is pivotal between thesestraps on the pin I8 and has the cam shaped head I9 engaging behind thelatch lug IE, to forcibly draw the opposed jaws of the clamp togetherwhen the latch II is forced into the gap I'I' between the plates I and2. The whole latch mechanism is thus gained into the clamp flush withthe periphery, except for the protrud- 35 ing finger grip. 20, fordislodging the latch.

So that the axis of the waving rod 2I may project from the dead centerof the clamp, the parting line 22 of the jaws is set lateral to thediameter of the clamp. The opposed edges of the jaws 4 on this partingline are provided with the resilient lips 23 and 24 respectively, seeFig. 5. The plates 3, 4, 5 are cut back adjacent this parting line toadmit the ribs 25 and 26 of these lips which have lateral flangesextending flush with the outer 45 planes of the outer plates I, I, and2, 2, respectively. It is the function of these lips to grip the lock ofhair :r, adjacent the scalp, and when compressed by the latch mechanismI5-20 they will prevent vapor leakage through the clamp and minimizecapillary attraction along the hair :1: to the scalp at x.

The arcuate notch 21 in the perimeter of the clamp receives thecircumference of the adjacent clamp and permits a closer arrangement ofthe clamps upon the head of the wearer.

The laminated structure is held together by rivets placed at properintervals as at 28, 29, 30 and 3| in addition to the pins 6 and [5. Theheads of these pins and rivets are countersunk in the plates 2 and 2,and extend through the laminations and are riveted over the plates 1 andl'. The laminae may be cemented together and the transverse rivetsdispensed with if desired.

The clip 32 held by the rivet 30 is provided to hold the ends of astring used in the manual technique of tying the hair at to the rod 2|,if required. In the present instance the rod 2| is provided with thehook shaped foot 2| which holds the hair and dispenses with the string.

The laminated structure permits the use of material reinforced withwoven fabric which is not possible were the jaws of the clamp molded inhomogeneous units having the parts l3, and I 6 of the latch and the thinmembers of the hinge cored therein. The laminations separated by airfilms are less thermoconductive than an equal thickness of the samematerial in one piece.

It has been the practice heretofore to interpose a layer of felt orsimilar material between the protector and scalp. In the compact rigidconstruction and joining of parts incidental to the laminatedconstruction, the minimum amount of metal involved, the dielectric andlow thermal conductivity of the material and the general efiiciency ofthe present invention renders absorbent pads unnecessary. The layer ofsheet cork 33 cemented to the underside of the protector jaws and cut tothe same outline as the plates 2 and 2 is nonabsorbent, dielectric andheat nonconducting and provides a comfortable sanitary pad next to thescalp. The whole protector is adapted to be thoroughly sterilizedbetween operations.

This cork layer also insulates the scalp from the countersunk rivetheads.

In the present instance a protector for use in connection with spiralWaving is disclosed. The same laminated structure and generalcharacteristics are equally applicable to clamp protectors for use inthe croquignole technique, with appropriate modifications well withinthe spirit of the invention. This modification is shown in Fig. 7 withthe comparative parts indicated by the same numerals as the spiral clampwith the addition of 0:.

Having thus described this invention, what is claimed and desired tosecure by Letters Patent 1s:

1. A protector in the class described including a pair of laminated jawsof insulating material, certain of the laminae in each jaw being cutaway to form hinge lugs, intermediate latch lugs, and recesses,respectively; a hinge pin engaging said hinge lugs; a latch embeddedwithin the edge of the protector and engaging said intermediate latchlugs; and resilient lips embedded in said recesses and forming part ofthe meeting edges of said jaws.

2. A protector in the class described including a pair of hinged jawshaving top, bottom and intermediate plates of insulating material;insulating spacer laminae interposed between said plates; and acompression latch engaging said jaws.

3. A protector in the class described including a pair of jaws havingtop, bottom and intermediate plates of insulating material; insulatingspacer laminae interposed between said plates, certain of said platesand laminae being cut away to form interlocking lugs engaging a hingepin, and independent latch lugs on the respective jaws; and a pivotallatch engaging said latch lugs.

HARRY F. THOMPSON.

